[FFmpeg-user] -crf ignored

[David Overcash]

Try -crf 18 instead of 18.0 - I seem to remember decimal values being...
screwy.

On Wed, Jun 1, 2011 at 8:09 AM, Paul Gardiner <lists at glidos.net> wrote:

> Hi,
> I've been using this command:
>
> ffmpeg -i <input file> -f mp4 -vcodec libx264 -crf 18.0 -acodec ac3 -ab
> 160k <output file>
>
> and it works to some extent, but the report on stdout/stderr says
> that it is using crf=23.0. The results support 23.0 being used,
> plus if I change the value I pass in, it has no effect on the file
> size or quality. Can anyone tell me what I'm doing wrongly? I
> can easily supply more info if that helps.
>
> Paul.
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